86397777908 has 12 divisors (see below), whose sum is σ = 162826581540. Its totient is φ = 39875897472.

The previous prime is 86397777863. The next prime is 86397777941. The reversal of 86397777908 is 80977779368.

It can be written as a sum of positive squares in 2 ways, for example, as 10586763664 + 75811014244 = 102892^2 + 275338^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830747813 + ... + 830747916.

It is an arithmetic number, because the mean of its divisors is an integer number (13568881795).

Almost surely, 2^86397777908 is an apocalyptic number.

It is an amenable number.

86397777908 is a deficient number, since it is larger than the sum of its proper divisors (76428803632).

86397777908 is a wasteful number, since it uses less digits than its factorization.

86397777908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661495746 (or 1661495744 counting only the distinct ones).

The product of its (nonzero) digits is 224042112, while the sum is 71.

The spelling of 86397777908 in words is "eighty-six billion, three hundred ninety-seven million, seven hundred seventy-seven thousand, nine hundred eight".